<template>
  <div class="mod-config">
    <el-tabs v-model="activeName" @tab-click="changeSort()">
      <el-tab-pane label="全部" name=0></el-tab-pane>
      <el-tab-pane label="公开" name=1></el-tab-pane>
      <el-tab-pane label="非公开" name=2></el-tab-pane>
    </el-tabs>
    <el-form :inline="true" :model="dataForm" @keyup.enter.native="getDataList()">
      <el-form-item>
        <el-input v-model="dataForm.key" placeholder="课程标题" clearable></el-input>
      </el-form-item>
      <el-form-item>
        <el-button @click="getDataList()">查询</el-button>

      </el-form-item>
    </el-form>
    <el-table
      highlight-current-row
      ref="refTable"
      :data="dataList"
      :expand-row-keys="expandRow"
      :row-key="getRowKeys"
      border
      v-loading="dataListLoading"
      @expand-change="clickChange2"
      style="width: 100%;">

      <el-table-column width="50" type="expand">

        <template   slot-scope="scope">
          <span  style="margin-left: 40%;font-size: 25px;font-weight: bolder" >请拖动视频调整顺序</span>
          <el-tree
            style="margin-left: 35%;margin-top: 2%"
            :data="detailInfoTest"
            :props="defaultPros"
            @node-drop="handleDrop"
            draggable
            ref="test1"
            node-key="catId"
            :allow-drop="allowDrop">

          <span  class="custom-tree-node" slot-scope="{ node, data }">

             <span style="font-size: 20px">{{ node.label }}</span>
              <span>
<!--                <el-button type="text" size="mini">Append</el-button>-->
                <el-button type="text" size="mini" @click="videoDelete(node)">删除</el-button>
              </span>
          </span>
          </el-tree>
          <el-button style="position: relative;left: 45%;margin-top: 3%" type="danger" @click="changeVideo(scope.row)">
            确认更改
          </el-button>
        </template>

      </el-table-column>

      <el-table-column
        prop="courseTitle"
        header-align="center"
        align="center"
        label="课程标题">
      </el-table-column>


      <el-table-column
        prop="teacherId"
        header-align="center"
        align="center"
        label="教师的id">

      </el-table-column>


      <el-table-column
        header-align="center"
        align="center"
        label="更新时间">
        <template slot-scope="scope">
          <span v-if="scope.row.updateTime ===  ''">暂未更新</span>
          <span v-else>{{ scope.row.updateTime }}</span>
        </template>
      </el-table-column>


      <el-table-column
        fixed="right"
        header-align="center"
        align="center"
        width="300"
        label="操作">
        <template slot-scope="scope">
          <el-button style="background-color: #5cc0f5;color: #fffcfc" size="mini" @click="clickChange(scope.row)">
            调整视频位置
          </el-button>

          <el-button style="background-color: #2ed9bf;color: #fffcfc" size="mini" @click="show(scope.row)">上传课程视频
          </el-button>
        </template>
      </el-table-column>

    </el-table>


    <el-pagination
      @size-change="sizeChangeHandle"
      @current-change="currentChangeHandle"
      :current-page="pageIndex"
      :page-sizes="[10, 20, 50, 100]"
      :page-size="pageSize"
      :total="totalPage"
      layout="total, sizes, prev, pager, next, jumper">
    </el-pagination>

    <el-dialog title="上传课程视频"
               v-if="showDiaLog"
               :visible.sync="showDiaLog"
               style="text-align: center"

    >
      <multi-upload
        style="margin-top: 5%"
        @getVideo="getVideo"
        :value="video"
      >
      </multi-upload>
      <div slot="footer" class="dialog-footer">
        <el-button @click="clickCancel">取 消</el-button>
        <el-button type="primary" @click="updateVideo">确 定</el-button>
      </div>
    </el-dialog>


    <!-- 弹窗, 新增 / 修改 -->
    <add-or-update v-if="addOrUpdateVisible" ref="addOrUpdate" @refreshDataList="getDataList"></add-or-update>
  </div>
</template>

<script>

import AddOrUpdate from './course-add-or-update'
import MultiUpload from '../../../components/upload/multiUploadVideo'
import log from '../sys/log'
import type from '../question/type'

export default {
  data () {
    return {

      dataForm: {
        key: '',
        video: []
      },
      videoForm: {
        id: '',
        videoUrl: []
      },
      detailInfo: [],
      // detailInfo:[{"name":"我是第一季","index":2,"url":"sedqweqweqwewqe"},{"name":"我是第二季","index":2,"url":"sedqweqweqwewqe"}],
      // detailInfo:[{"name":"share_f1cf6f1ae6d462384af8717f3d4d571c.mp4","url":"2021-12-17/dda6e40efc7a4d7ba86d8aff21c4b60d_share_f1cf6f1ae6d462384af8717f3d4d571c.mp4","index":1},{"name":"JoJo\u0027s Gang Torture Dance.mp4","url":"2021-12-17/dda6e40efc7a4d7ba86d8aff21c4b60d_JoJo\u0027s Gang Torture Dance.mp4","index":2}],
      //[{"name":"share_f1cf6f1ae6d462384af8717f3d4d571c.mp4","url":"2021-12-17/dda6e40efc7a4d7ba86d8aff21c4b60d_share_f1cf6f1ae6d462384af8717f3d4d571c.mp4","index":1},{"name":"JoJo\u0027s Gang Torture Dance.mp4","url":"2021-12-17/dda6e40efc7a4d7ba86d8aff21c4b60d_JoJo\u0027s Gang Torture Dance.mp4","index":2}]
      video: [],
      dataList: [],
      pageIndex: 1,
      pageSize: 10,
      totalPage: 0,
      dataListLoading: false,
      dataListSelections: [],
      addOrUpdateVisible: false,
      activeName: 0,
      showDiaLog: false,
      num: '',
      //树控件的初始数据
      detailInfoTest: [],
      //设置树显示的内容为数据中的name
      defaultPros: {
        children:'children',
        label: 'name'
      },
     // 拖拽更新后的视频数组 ！！！
     newVideo:[],
      flag:0,
      expandRow:[],
      //点击上传课程视频后及时更新改行视频的视频数据
      tempFlag:'',
      //是否可以展开的标志量
      expandFlag1:true,
      expandFlag2:true,
    //  拖拽后删除标准
      dragDeleteFlag:0
    }
  },
  components: {
    MultiUpload,
    AddOrUpdate,

  },

  activated () {
    this.getDataList()
  },
  methods: {
    // 获取数据列表
    getDataList () {
      this.dataListLoading = true
      this.$http({
        url: this.$http.adornUrl('/course/course/list'),
        method: 'get',
        params: this.$http.adornParams({
          'page': this.pageIndex,
          'limit': this.pageSize,
          'key': this.dataForm.key,
          'sort': this.activeName
        })
      }).then(({data}) => {
        if (data && data.code === 0) {

          this.dataList = data.page.list
          this.totalPage = data.page.totalCount

          // console.log(this.dataList)
          //如果
          if (this.dataList!==''){
            this.dataList.forEach(t =>{
              if (this.tempFlag === t.id){
                this.detailInfoTest=JSON.parse(t.videoUrl)
                // console.log(this.detailInfoTest)
              }
            })
          }

          // console.log(this.dataList[this.tempFlag])
          // console.log(this.tempFlag)

          // if (data.page.list[this.tempFlag]!=='' && this.tempFlag !== ''){
          //   this.detailInfoTest=JSON.parse(this.dataList.list[this.tempFlag].videoUrl)
          //   this.tempFlag = ''
          // }
          // console.log(data.page.list[0])
        } else {
          this.dataList = []
          this.totalPage = 0
        }
        this.dataListLoading = false
      })
    },
    // 每页数
    sizeChangeHandle (val) {
      this.pageSize = val
      this.pageIndex = 1
      this.getDataList()
    },
    // 当前页
    currentChangeHandle (val) {
      this.pageIndex = val
      this.getDataList()
    },
    show (row) {
      this.videoForm.id = row.id
      //将数据从字符串转成json
      // console.log(JSON.parse(row.videoUrl))
      // console.log(row.videoUrl)
      if (row.videoUrl !== '') {
        this.video = JSON.parse(row.videoUrl)
        // console.log(this.video)
        this.videoForm.video = JSON.parse(row.videoUrl)
      }
      // console.log(typeof row)
      // console.log(scope)
      this.tempFlag = row.id

      // console.log(typeof JSON.parse(row.videoUrl))
      this.showDiaLog = true
    },
    getRowKeys(row) {
      return row.id;
    },
    // 多选
    selectionChangeHandle (val) {
      this.dataListSelections = val
    },
    // 新增 / 修改
    addOrUpdateHandle (id) {
      this.addOrUpdateVisible = true
      this.$nextTick(() => {
        this.$refs.addOrUpdate.init(id)
      })
    },
    // 删除
    deleteHandle (id) {
      var ids = id ? [id] : this.dataListSelections.map(item => {
        return item.id
      })
      this.$confirm(`确定对[id=${ids.join(',')}]进行[${id ? '删除' : '批量删除'}]操作?`, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        this.$http({
          url: this.$http.adornUrl('/live/live/update'),
          method: 'post',
          data: this.$http.adornData(ids, false)
        }).then(({data}) => {
          if (data && data.code === 0) {

            this.$message({
              message: '操作成功',
              type: 'success',
              duration: 1500,
              onClose: () => {
                this.getDataList()
              }
            })
          } else {
            this.$message.error(data.msg)
          }
        })
      })
    },
    changeSort () {
      this.dataForm.key = ''
      this.getDataList()
    },
    getVideo (video) {

      this.videoForm.videoUrl = video
      // console.log((this.videoForm))
    },
    //上传视频
    updateVideo () {
      //如果没有上传视频就提示上传视频
      if (this.videoForm.videoUrl.length === this.video.length) {
        this.$http({
          url: this.$http.adornUrl('/live/live/updateVideo'),
          method: 'post',
          data: this.$http.adornData(this.videoForm)
        }).then(({data}) => {
          if (data && data.code === 0) {
            this.$message({
              message: '上传成功',
              type: 'success',
              duration: 1500,
              onClose: () => {
                this.getDataList()
                this.showDiaLog = false
              }
            })
          } else {
            this.$message.error(data.msg)
          }
        })
      } else {
        this.$message.error('请上传视频')
      }

    },

    //  点击取消
    clickCancel () {
      this.showDiaLog = false
    },
    //调整视频顺序按钮
    clickChange (row) {
      if (this.expandFlag1){
        this.expandRow = []
        this.expandRow.push(row.id)
        this.expandFlag1 = false
      }else {
        this.expandRow = []
        this.expandFlag1 = true
      }

      this.detailInfo = []
      if (row.videoUrl !== '') {
        this.detailInfo = JSON.parse(row.videoUrl)
      }
      this.$refs.refTable.toggleRowExpansion(row)
    },
    //点击展开符号的事件
    clickChange2 (row) {
      if (this.expandFlag2){
        this.expandRow = []
        this.expandRow.push(row.id)
        this.expandFlag2 = false
      }else {
        this.expandRow = []
        this.expandFlag2 = true
      }


      this.detailInfo = []
      this.newVideo = []
      this.flag = 0
      if (row.videoUrl !== '') {
        this.detailInfo = JSON.parse(row.videoUrl)
        this.detailInfoTest = JSON.parse(row.videoUrl)
        // console.log(JSON.parse(row.videoUrl))
        //给调整顺序需要的数组赋初值  ！！！ 防止没有调整直接点击上传空数组 ---  JOJO
        this.detailInfo.forEach(t =>{
          this.newVideo.push(t)
        })
      }
      // console.log(this.newVideo)
    },


    videoDelete (data) {
      // console.log(data.data.index)
      this.$confirm("确定删除改视频?","提示",{
        confirmButtonText:'确定',
        cancelButtonText:'取消'
      }).then(()=>{
        // console.log(this.flag)
        let temp = []
        //如果是没有拖拽过直接删除
        if (this.flag === 0){
          this.newVideo.forEach(t=>{
            if (t.index !== data.data.index){
              temp.push(t)
            }
          })
        }else{
            //有拖拽过 （需要从node中拿数据）
            this.newVideo.forEach(node=>{
              if (node.data.index !== data.data.index){
                temp.push(node.data)
              }
            })
        }
        //拖拽删除标准位赋值
        this.dragDeleteFlag = 1
        //点击删除更新要上传的数据
        this.newVideo = temp
        //点击删除更新视图的诗句
        this.detailInfoTest = temp
        // console.log(temp)
      }).catch(()=>{})
    },
    //判断是否可以拖拽
    allowDrop (draggingNode, dropNode, type) {
      return type !== "inner";
      // return true;
    },
    //拖拽的时候的事件
    handleDrop (draggingNode, dropNode, dropType, ev) {
      // console.log(dropNode.store.root.childNodes)
      this.newVideo = dropNode.store.root.childNodes
      // console.log(this.newVideo)
      this.flag = 1
    },
    //点击确认更改按钮
    changeVideo (row) {

      this.$confirm("确定更改视频?","提示",{
        confirmButtonText:'确定',
        cancelButtonText:'取消'
      }).then(()=>{
        //准备数据
        let data = []
        let position = 0
        // console.log(this.newVideo)
        //如果是拖拽过的 获取到的是node的数组

        if (this.flag ===1 && this.dragDeleteFlag === 0){
          console.log(this.newVideo)
          this.newVideo.forEach((t)=>{
            position++
            let param = {
              name:t.data.name,
              index: position,
              url:t.data.url
            }
            data.push(param)
          })
          // console.log(data)
        }else{

          //如果没拖拽过的 获取到的是原来数据库的数据
          this.newVideo.forEach((t)=>{
            position++
            let param = {
              name:t.name,
              index: position,
              url:t.url
            }
            data.push(param)
          })
        }
        // console.log(data)

        const params = {
          id:row.id,
          videoUrl:data
        }
        // console.log(params)
        // 更新视频
        this.$http({
          url: this.$http.adornUrl('/live/live/updateVideo'),
          method: 'post',
          data: this.$http.adornData(params)
        }).then(({data}) => {
          if (data && data.code === 0) {
            this.$message({
              message: '更改成功',
              type: 'success',
              duration: 1500,
              onClose: () => {
                this.expandRow = []
                this.getDataList()
                //待测试可能有BUg --todo
                if (row.videoUrl!==''){
                  this.expandRow.push(row.id)
                }
              }
            })
          } else {
            this.$message.error(data.msg)
          }
        })
      }).catch(()=>{})


    },
  }
}
</script>
